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Finding the Fourth Proportional to 569.52, 786.72 and 440.19

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Solution

The fourth proportional to 569.52, 786.72 and 440.19 is: 608.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.52 : 786.72 = 440.19 : x
  2. Step 2: Convert to fraction form
    569.52/786.72 = 440.19/x
  3. Step 3: Cross multiply
    569.52x = 786.72 × 440.19
  4. Step 4: Simplify right side
    569.52x = 346,306.28
  5. Step 5: Solve for x
    x = 346,306.28/569.52
  6. Step 6: Final answer
    x = 608.07

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.